A method of solid material filling coal mining gob-side entry retaining
A solid material, filling coal mining technology, applied in filling, ground mining, mining equipment and other directions, can solve the problems of high cost of filling bags, low work efficiency, inability to effectively connect to the roof, etc., to achieve stable roadway structure and reduce the use of volume and cost reduction
Active Publication Date: 2017-10-10
JIZHONG ENERGY GRP
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a method for solid material filling coal mining goaf retaining method, which can solve the problem that when solid materials are filled, only using high-water materials or paste materials to retain roads cannot be effectively connected to the roof, and the cost of using filling bags The problem of high and low work efficiency
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0024] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings, as figure 1 with figure 2 As shown, the present invention provides a method for solid material filling coal mining gob-side entry retention, comprising the following steps,
[0025] (1) Excavation of coal transport roadway, solid filling material roadway and cut hole in the working face
[0026] Firstly excavate coal transport roadway 1, solid filling material roadway 2 and cutting hole (not shown) in the working face to form the mining and ventilation system of the working face;
[0027] (2) Erection of coal mining and solid material filling equipment and completion of coal mining work at a certain distance
[0028] Erection of coal mining and solid material filling equipment, including coal filling hydraulic support with pushing device 3, coal shearer 4, coal transport scraper conveyor 5, coal transport belt 6...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The present invention provides a solid material filling mining gob side entry retaining method. Retaining baffles are used for isolation of a filling material and a reserved roadway; and then a solid material filling combined with fluid reinforcing manner is used to complete retaining operations. The method avoids the problem of effective top-contact in the retaining process by using an individual high-water material or paste material. The retaining isolation baffles are supported by horizontal pillars, so that the retaining isolation baffles cannot protrude into the reserved roadway, and the reserved roadway has structure stability. No filling bag is used, thereby reducing the amount of fluid filling material and reducing the cost of filling mining.
Description
technical field [0001] The invention relates to the technical field of coal mining, in particular to a method for retaining gob-side entry in coal mining with solid material filling. Background technique [0002] Coal will be the most important energy in our country for a long time now and in the foreseeable future. About 90% of my country's coal production is underground mining. Underground coal mining not only destroys the ecological environment of the mining area, damages the surface buildings (structures), but also brings serious safety hazards. The fundamental way to solve these problems lies in the mining space. filling. The existing filling coal mining methods can be further classified from the filling materials used, which are: solid material filling, paste material filling, and high-water filling material. The coal mining method of solid material filling can effectively release the "three downs" of coal pressing and improve the recovery rate of coal resources. At ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/18E21F15/00
CPCE21C41/18E21F15/00
Inventor 海龙隋淑梅游志忠卢钢秦大健
Owner JIZHONG ENERGY GRP